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3163 Randi (1981 QM)
Classification: Mars-crossing Asteroid          SPK-ID: 2003163
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3355857830385945 4.1889e-08  
a 2.392844273026677 9.9426e-09 au
q 1.589839753973603 1.0146e-07 au
i 3.087688851052187 5.8108e-06 deg
node 194.0693886928906 8.3332e-05 deg
peri 121.5783467954065 8.3766e-05 deg
M 104.6443630388527 1.0042e-05 deg
tp 2457007.508263753795
(2014-Dec-16.00826375)
3.6214e-05 JED
period 1351.97941809924
3.70
8.4265e-06
2.307e-08
d
yr
n .2662762429520762 1.6596e-09 deg/d
Q 3.19584879207975 1.3279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1152  
   data-arc span      26029 days (71.26 yr)  
   first obs. used      1944-09-13  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4877  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:46:48  

Additional Information
 Earth MOID = .577273 au 
 Jupiter MOID = 2.12337 au 
 T_jup = 3.450 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO302081  
rotation period rot_per 59.50 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/astero id/lightcurves.htm]

3163 Randi (1981 QM)          Discovered 1981-Aug-28 by Kowal, C. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 QM = 1944 RH = 1970 RK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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